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J Int Med Res 2020 May;48(5):300060520925999

Department of Osteonecrosis and Hip Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, P.R. China.

Objective: This study was performed to compare the clinical outcomes and performance of the collum femoris-preserving (CFP) stem (Waldemar Link GmbH & Co., Hamburg, Germany) and the Tri-Lock stem (DePuy Orthopaedics, Warsaw, IN, USA) in terms of femoral offset (FO) and leg length reconstruction.

Methods: Clinical and radiographic data of patients who underwent total hip arthroplasty with either a CFP stem or Tri-Lock stem from January 2016 to March 2017 were compared (65 and 57 patients, respectively). Read More

J Bone Joint Surg Am 2020 May 25. Epub 2020 May 25.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.

Background: Many surgeons are reluctant to use a constrained liner at the time of acetabular component revision because of concerns that doing so might result in early acetabular component loosening related to high bone-implant interface stresses transmitted from the constrained liner. We hypothesized that, with appropriate initial implant stabilization using highly porous acetabular components with robust supplemental screw fixation, constrained liners could be safely used at the time of acetabular revision.

Methods: We retrospectively identified 148 revision total hip arthroplasties (THAs) in which a constrained liner of 1 design was cemented into a newly placed highly porous acetabular component fixed with supplemental screws (mean, 5 screws). Read More

J Orthop Surg Res 2020 May 24;15(1):184. Epub 2020 May 24.

Medical School of Chinese People's Liberation Army General Hospital, Beijing, 100853, China.

Background: The acetabular distraction technique demonstrates encouraging radiographic and clinical outcomes in treating chronic pelvic discontinuity. The aim of this study is to describe a modified distraction technique and to show our results.

Methods: This study identified 12 cases of chronic pelvic discontinuity undergoing primary or revision total hip arthroplasty (THA) with the technique of reverse reaming distraction between July 2015 and November 2018. Read More

Int J Surg Case Rep 2020 May 8;71:85-90. Epub 2020 May 8.

Department of Orthopaedic & Traumatology, Cipto Mangunkusumo National Central Hospital and Faculty of Medicine, Universitas Indonesia, Jalan Diponegoro No. 71, Central Jakarta, Jakarta 10430, Indonesia.

Introduction: Traumatic dislocation of the hip is a very severe injury. Posterior hip dislocation can be associated with acetabular fracture, which can ultimately result in a higher incidence of complications.

Case Presentation: We present a case report of 26-year-old men with a motor vehicle accident and suffered a posterior hip dislocation on left hip joint and acetabular fracture with Judet-Letournel type posterior wall and femoral head fracture. Read More

J Arthroplasty 2020 Apr 28. Epub 2020 Apr 28.

Division of Orthopaedic Surgery, The Ottawa Hospital General Campus, Ottawa, Ontario, Canada.

Background: Cup orientation has been shown to influence the postoperative risk of impingement and dislocation following total hip arthroplasty (THA) and may change over time due to changes in pelvic tilt that occur with aging. The purpose of this study is to determine if there is a significant change in acetabular cup inclination and anteversion over a 10-year period following THA.

Methods: A retrospective, multisurgeon, single-center cohort study was conducted of 46 patients that underwent THA between 1995 and 2002. Read More

Medicine (Baltimore) 2020 May;99(20):e20215

Department of Orthopaedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.

Hip preserving procedures are still a challenge in late-stage osteonecrosis of femoral head (ONFH) patients. We aimed to compare the clinical outcomes of surgical dislocation and impaction bone graft and surgical dislocation and rotational osteotomy for treatment of ONFH in Association Research Circulation Osseous (ARCO) stage III patients.We retrospectively reviewed 30 ARCO stage III patients (33 hips) who had surgical dislocation and impaction bone graft or surgical dislocation and rotational osteotomy in our center from June 2012 to December 2017. Read More

J Orthop Translat 2020 May 20;22:43-49. Epub 2019 Sep 20.

Universität Heidelberg, Im Neuenheimer Feld 110, Heidelberg, 69120, Germany.

Introduction: Long-term study evidence about the BioBall® adapter system is limited, especially in highly morbid elderly patients. Thus, we analysed the long-term outcome of revision hip arthroplasty using this system in highly morbid elderly patients.

Materials And Methods: We included 19 patients undergoing revision hip arthroplasty after primary or secondary total hip arthroplasty dislocations between July 2002 and August 2004 and followed up their long-term outcome until 2015. Read More

Ann Palliat Med 2020 May 8. Epub 2020 May 8.

Department of Pediatric Orthopedics, Ningbo Women & Children's Hospital, Ningbo 315012, China.

Background: The treatment protocol for children with developmental dysplasia of the hip (DDH) is routinely adjusted by assessing the hip reduction after 3 weeks of Pavlik harness treatment. However, there is a high risk of failure and complications in the treatment adjustment. The aim of this study was to explore the value of ultrasound features in predicting the treatment outcome of Pavlik harness after 3 weeks in DDH children. Read More

J Orthop Surg (Hong Kong) 2020 Jan-Apr;28(2):2309499020924164

Department of Orthopaedics and Traumatology, University of Health Sciences Affiliated Hospital of Keçiören, Ankara, Turkey.

Purpose: Total hip arthroplasty (THA) for high-riding hips is a complex procedure and the requirement for subtrochanteric osteotomy (STO) is an important decision that needs to be taken preoperatively. STO renders this complex surgery even more complicated and there are no guidelines to determine the STO requirement. In this study, the outcomes of THA for patients with high-riding hips were evaluated and a practical classification system is proposed to predict any osteotomy requirement. Read More

Int J Surg Case Rep 2020 May 7;70:234-237. Epub 2020 May 7.

Service de Traumatologie, CHRU Cavale Blanche, Brest, France. Electronic address:

Introduction: Fractures-dislocations of the femoral head are rare, and irreducible dislocations are even rarer. The functional prognosis is poor.

Presentation Of Case: We report the case of a 23-year-old male brought to the emergency room following low-energy trauma. Read More

Clin Orthop Relat Res 2020 May 11. Epub 2020 May 11.

J. Wang, L. Min, M. Lu, Y. Zhang, Y. Wang, Y. Luo, Y. Zhou, H. Duan, C. Tu, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, People's Republic of China J. Wang, L. Min, M. Lu, Y, Zhang, Y. Luo, Y. Zhou, C. Tu, Bone and Joint 3D-Printing and Biomechanical Laboratory, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, People's Republic of China.

Background: Functional reconstruction after resection of pelvic malignancies involving the acetabulum remains challenging. Numerous reconstruction methods have been proposed, but they are generally associated with mechanical and nonmechanical complications. To improve the function of patients with primary malignancies of the acetabulum after internal hemipelvectomy and reduce the complication rate after this procedure, we designed a series of three-dimensional (3D) printed custom-made integrative hemipelvic endoprostheses with a porous structure and wanted to present the early results of using this construct to determine whether it could be considered a reasonable reconstruction option. Read More

Ann Med Surg (Lond) 2020 Jun 3;54:97-100. Epub 2020 May 3.

Department of Orthopaedics and Traumatology, Faculty of Medicine Universitas Indonesia, Dr. Cipto Mangunkusumo General National Hospital, Jl. Diponegoro No. 71, Jakarta Pusat, Indonesia.

Recurrent hip dislocation in a Down Syndrome patient with dysplastic hip is a very rare and challenging case to treat even for an expert orthopaedic hip surgeon. Least compliant patient and family, lowly educated with low socioeconomic status, young age and several anatomical variations forces limited option as a treatment. Several literatures mentioned Despite requiring only minimal implant, this technically demanding surgery requires a thorough understanding of the hip anatomy. Read More

J Arthroplasty 2020 Apr 27. Epub 2020 Apr 27.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.

Background: Ankylosing spondylitis (AS) is a common inflammatory spondyloarthropathy with hip involvement in 40% of patients. With the recent interest in the hip-spine interplay, the purpose of this study was to define the long-term outcomes of revision total hip arthroplasty (THA) in the setting of AS.

Methods: 174 hips in patients with AS treated with revision THA from 1969 to 2016 were identified. Read More

J Arthroplasty 2020 Apr 20. Epub 2020 Apr 20.

Division of Orthopaedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; ICES, Toronto, Ontario, Canada.

Background: The aim of this study is to determine whether the high risk of surgical complications within 1 year of total hip arthroplasty (THA) is due to associated comorbidities or morbid obesity alone as measured by body mass index (BMI ≥ 40 kg/m).

Methods: Population-based retrospective cohort study was conducted of all adults in Ontario undergoing primary THA for osteoarthritis (2012-2018). All patients were followed for 1 year. Read More

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2020 May;34(5):557-562

Department of Orthopedics, the First Medical Center, General Hospital of Chinese PLA, Beijing, 100853, P.R.China.

Objective: To investigate revision reasons and prosthesis selection of Crowe Ⅳ developmental dysplasia of the hip (DDH) after total hip arthroplasty (THA).

Methods: A clinical data of 14 patients (15 hips) with Crowe Ⅳ DDH, who underwent a revision hip arthroplasty between January 2008 and May 2018, was retrospectively reviewed. There were 1 male (1 hip) and 13 females (14 hips). Read More

Orthop Traumatol Surg Res 2020 May 11. Epub 2020 May 11.

Service de Chirurgie Orthopédique et de Traumatologie, Hôpital de Hautepierre, Hôpitaux Universitaires de Strasbourg, 1, avenue Molière, 67098 Strasbourg cedex, France.

Introduction: Failure of internal fixation in trochanteric fracture (or extracapsular proximal femoral fracture: PFF) is a serious complication often requiring total hip arthroplasty (THA). THA after PPF incurs a higher risk of complications than in intracapsular fracture due to frequent impact on local anatomy, notably with risk of implant dislocation. Recent studies demonstrated a protective effect of dual-mobility (DM) cups against instability in these cases but in a population mixing failure of internal fixation in intra- and extracapsular fractures. Read More

World J Orthop 2020 Apr 18;11(4):232-242. Epub 2020 Apr 18.

Orthopaedic Department, Democritus University of Thrace, University General Hospital of Alexandroupolis, Alexandroupolis 68100, Greece.

Background: Total hip replacement has become one of the most successful orthopaedic procedures. The length of the femoral stem constitutes one of the most important geometrical and mechanical features of the prosthesis. Several different implants are currently available but data are limited concerning the clinical results for some of these implants. Read More

J Am Acad Orthop Surg 2020 May 12. Epub 2020 May 12.

From the Department of Orthopedics, Anne Arundel Medical Center, Annapolis, MD.

Background: This study aimed to examine the major reasons for total hip arthroplasty (THA) failure and temporal patterns in THA revisions.

Methods: A retrospective chart review was conducted on 535 revisions performed on 444 THAs from January 2010 to May 2019 at our institution.

Results: The average time to revision THA was 8. Read More

J Orthop 2019 Nov-Dec;16(6):A1-A3. Epub 2019 Oct 9.

S L Raheja (A Fortis Associate) hospital, Mahim West, Mumbai, India.

The femoral head size influences dislocation, range of motion (ROM), functional outcome, wear, and survival after total hip arthroplasty (THA). These aspects of different head sizes with contemporary bearings in primary THA have been reviewed. Based on the existing evidence, for highly-cross-linked polyethylene (HXLPE) bearings, a 32 mm cobalt chromium (CoCr) or ceramic head appears to be a suitable choice. Read More

SA J Radiol 2020 22;24(1):1837. Epub 2020 Apr 22.

Division of Radiodiagnosis, Department of Medical Imaging and Clinical Oncology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.

Background: The relevance of clinical data included in blunt trauma referrals for abdominal computed tomography (CT) is not known.

Objectives: To analyse the clinical details provided on free-text request forms for abdominal CT following blunt trauma and assess their association with imaging evidence of intra-abdominal injury.

Method: A single-institution, retrospective study of abdominal CT scans was performed for blunt trauma between 01 January and 31 March 2018. Read More

Hip Int 2020 May 11:1120700020923619. Epub 2020 May 11.

Department of Orthopaedic Surgery University of Pennsylvania, Philadelphia, PA, USA.

Introduction: Prosthetic hip dislocation is a common, costly complication of total hip arthroplasty (THA). Despite this, the national burden of prosthetic hip dislocations remains uncharacterised in the United States, especially pertaining to injuries occurring years after the index procedure. This study examines historical and projected national estimates of prosthetic hip dislocations presenting to U. Read More

Orthop Traumatol Surg Res 2020 May 5. Epub 2020 May 5.

Department of orthopaedic surgery, Teikyo university Chiba medical center, 3426-3 Anesaki, 299-0111 Ichihara, Chiba, Japan.

Traumatic hip dislocations should be reduced gently and promptly to prevent complications such as osteonecrosis of the femoral head, heterotopic ossification, incomplete recovery of sciatic nerve injury, and fractures of the femoral neck. Many closed reduction manoeuvres have been reported; however, these manoeuvres require forceful and sustained traction, which places an enormous physical burden on surgeons. The aim of the present technical note is to describe a new reduction manoeuvre that uses a traction table to decrease the physical burden experienced by surgeons. Read More

Int Orthop 2020 May 8. Epub 2020 May 8.

Laboratoire d'Analyse et de Traitement de l'Information Médicale, LaTIM UMR 1101 Institut National de la Santé Et de la Recherche Médicale, Université de Bretagne Occidentale INSERM-UBO, Brest, France.

Background: Limiting the risk of dislocation is one of the main aims of both dual mobility and Lefèvre retentive cups. However, these devices have never been compared. The goal of our study was to compare these devices in total hip arthroplasty revisions for instability. Read More

J Hip Preserv Surg 2020 Jan 25;7(1):153-159. Epub 2020 Jan 25.

Centum High School, Busan, South Korea.

Femoral retroversion is an extra-articular cause of cam-type femoroacetabular impingement (FAI) via early engagement with anterior rim. Valgus hip also causes extra-articular FAI by decreasing the range of motion. We present a case of valgus hip accompanied by femoral retroversion, which was refractory to prior arthroscopic femoroplasty. Read More

J Arthroplasty 2020 Apr 11. Epub 2020 Apr 11.

Department of Orthopaedic Surgery, University of Virginia Health System, Charlottesville, VA.

Background: Despite being a relatively common problem among aging men, hypogonadism has not been previously studied as a potential risk factor for postoperative complications following total hip arthroplasty (THA).

Methods: In total, 3903 male patients with a diagnosis of hypogonadism who underwent primary THA from 2006 to 2012 were identified using a national insurance database and compared to 20:1 matched male controls using a logistic regression analysis.

Results: Hypogonadism was associated with an increased risk of major medical complications (odds ratio [OR] 1. Read More

J Arthroplasty 2020 Apr 11. Epub 2020 Apr 11.

Department of Orthopaedic Surgery, University of Virginia, Charlottesville, VA.

Background: The objective of this study is to evaluate urinary self-catheterization as a potential risk factor for postoperative complications following total hip (THA) and knee (TKA) arthroplasty procedures.

Methods: Self-catheterization patients who underwent total joint arthroplasty from 2005 to 2014 were identified in a national insurance database. Rates of death, hospital readmission, emergency room visit, infection, revision, and dislocation for THA or arthrofibrosis for TKA were calculated, as well as cost and length of stay. Read More

Clin Orthop Relat Res 2020 May 1. Epub 2020 May 1.

C. H. Shin, E. Yang, C. Lim, W. J. Yoo, I. H. Choi, T-J. Cho, Division of Pediatric Orthopaedics, Seoul National University Children's Hospital, Seoul, Republic of Korea.

Background: The acetabular index and center-edge angle are widely used radiographic parameters. However, the exact landmarks for measuring these parameters are not clearly defined. Although their measurement is straightforward when the lateral osseous margin of the acetabular roof coincides with the lateral end of the acetabular sourcil, where these two landmarks disagree, recommendations have differed about which landmark should be used. Read More

Hip Int 2020 May 6:1120700020925013. Epub 2020 May 6.

Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, IL, USA.

Introduction: Suboptimal acetabular component position can result in impingement, dislocation, and accelerated wear. Intraoperative pelvic motion has led to surgeon error and acetabular cup malposition. This study characterises the relationship between pelvic rotation and postoperative acetabular cup orientation. Read More

Acta Orthop Belg 2019 Dec;85(4):516-524

Antibiotic-loaded cement spacers are used in two- stage hip replacement. The aim of our study was to compare our results using a Spacer-G with previous results reported in the literature. From June 2002 to April 2010, all patients treated with a two-stage revision were retrospectively reviewed. Read More

Surg Technol Int 2020 May;36:63-69

Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.

Introduction: Acetabular cup malposition is very common in total hip arthroplasty (THA) and is significantly associated with many serious postoperative complications, such as dislocation, wear and loosening, and decreased range of motion. To improve the accuracy of intraoperative assessment, we recently developed an innovative sensor-based navigation system (Force-PRO device) using an inertial measurement unit and a 3D-printed liner for acetabular cup measurement, and aimed to evaluate its reliability and correlate its accuracy with that of a computer-assisted navigation system (CANS).

Design: Method-comparison study between the Force-PRO device and a standard CANS in a 1:1 pelvic bone model. Read More

Musculoskelet Surg 2020 May 5. Epub 2020 May 5.

Fondazione Pisana Per La Scienza, Via Ferruccio Giovannini 13, 56017, Pise, Italy.

Background: Total hip arthroplasty (THA) is one of the most performed intervention in orthopaedics surgery. Currently, there is no unanimous approval concerning the best approach for THA in terms of nerve palsies, dislocations and further revisions. Hence, a Bayesian network meta-analysis was conducted. Read More

Asian J Surg 2020 May 1. Epub 2020 May 1.

Orthopedics Department, Shin Kong Wu Ho-Su Memorial Hospital, School of Medicine, College of Medicine, Fu Jen Catholic University, Taiwan. Electronic address:

Diagnostics (Basel) 2020 Apr 29;10(5). Epub 2020 Apr 29.

Department of Pediatric Orthopedics, Shanghai Children's Medical Center affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.

Patients with mucopolysaccharidoses IVA (MPS IVA) have a progressive accumulation of the specific glycosaminoglycans (GAGs): chondroitin-6-sulfate (C6S) and keratan sulfate (KS), leading to the degeneration of the cartilage matrix and its connective tissue perturbing the regular microarchitecture of cartilage and successively distorting bone ossification and growth. Impaired cartilage quality and poor bone mineralization lead to serious hip disorders in MPS IVA patients. Although hip dysplasia is seen widely in musculoskeletal abnormality of this disorder, the pathophysiology of the hip bone and cartilage morphology in these patients remains unclear. Read More

Comput Methods Biomech Biomed Engin 2020 May 4:1-9. Epub 2020 May 4.

M2BE-Multiscale in Mechanical and Biological Engineering, Instituto de Investigación en Ingeniería de Aragón (I3A), Aragón Institute of Health Science (IACS), Universidad de Zaragoza, Zaragoza, España.

Dislocation after total hip arthroplasty (THA) remains a major issue and an important post-surgical complication. Impingement and subsequent dislocation are influenced by the design (head size) and position (anteversion and abduction angles) of the acetabulum and different movements of the patient, with external extension and internal flexion the most critical movements. The aim of this study is to develop a computational tool based on a three-dimensional (3D) parametric finite element (FE) model and an artificial neural network (ANN) to assist clinicians in identifying the optimal prosthesis design and position of the acetabular cup to reduce the probability of impingement and dislocation. Read More

Hip Int 2020 May 4:1120700020919943. Epub 2020 May 4.

Orthopaedic Department, Hospital La Paz, Madrid, Spain.

Background: Trabecular metal (TM) cups were introduced in order to achieve better ingrowth and stability of the cup in acetabular revision surgery. As their use has evolved over time, we have queried whether TM cups would improve results in terms of the rate of aseptic loosening when compared to historical uncemented porous titanium cups used in revision surgery for acetabular bone loss in Hospital La Paz (Madrid, Spain).

Methods: We retrospectively reviewed 197 acetabular revisions performed between 1991 and 2015. Read More

Knee Surg Sports Traumatol Arthrosc 2020 Jun 2;28(6):1712-1719. Epub 2020 May 2.

Department of Orthopaedic Surgery, Medical University of Innsbruck, Innrain 52, 6020, Innsbruck, Austria.

Purpose: The aim of the present study was to evaluate the impact of the coronavirus (COVID-19) pandemic on joint arthroplasty service in Europe by conducting an online survey of arthroplasty surgeons.

Methods: The survey was conducted in the European Hip Society (EHS) and the European Knee Associates (EKA). The survey consisted of 20 questions (single, multiple choice, ranked). Read More

Pediatr Radiol 2020 May 2. Epub 2020 May 2.

Child and Adolescent Protection Center, Children's National Hospital, Washington, DC, USA.

Background: Proximal femoral physeal fractures are rare in abused children. Recognition may be hampered due to their rarity and lack of an ossified femoral head. Prompt diagnosis and treatment are essential to preventing coxa vara. Read More

Surg Technol Int 2020 May;36:360-363

Department of Orthopaedic Surgery, NYU Langone Orthopedic Hospital, New York, New York.

Introduction: Hip dislocation is a devastating complication after total hip arthroplasty (THA), which is slightly higher when using the traditional posterior approach. The piriformis tendon is the most important dynamic posterior stabilizing structure. The piriformis-sparing technique provides a reproducible method for THA, greatly reducing the dislocation rate. Read More

J Bone Joint Surg Am 2020 Apr 30. Epub 2020 Apr 30.

The Joint Replacement Center of Ewha Womans University Seoul Hospital, Seoul, Republic of Korea.

Despite overall good survivorship and clinical outcomes in the short term after total hip arthroplasty (THA) with use of alumina ceramic-on-highly cross-linked polyethylene (HXLPE) in patients younger than 30 years of age, there is a paucity of long-term data to evaluate the fixation of the components and the prevalence of osteolysis. We reviewed the records of 45 patients (54 hips) who had been included in a previous report to evaluate the long-term functional outcomes as well as radiographic and computed tomographic scan findings (particularly with regard to component fixation and osteolysis) after a mean duration of follow-up of 17.8 years. Read More

J Orthop Surg (Hong Kong) 2020 Jan-Apr;28(2):2309499020910666

Department of Orthopaedic Surgery, Pusan National University School of Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea.

Purpose: Total hip arthroplasty (THA) is an available surgical option for failed acetabular fracture, previously managed by open reduction and internal fixation. This study aimed to report the postoperative outcomes of cementless THA in patients with this condition.

Materials And Methods: Between November 2000 and September 2016, 25 consecutive cementless THAs for failed internal fixation after acetabular fractures with a minimum follow-up of 2 years were analyzed. Read More

Cureus 2020 Mar 27;12(3):e7437. Epub 2020 Mar 27.

Orthopaedics, Panagiotis & Aglaia Kyriakou Children's Hospital, Athens, GRC.

Purpose The treatment of painful and chronic dislocated hip in children with severe cerebral palsy (CP) is particularly demanding and controversial. Numerous surgical techniques have been described, and their outcomes vary a lot. The purpose of the present study is to evaluate a new method, which combines varus derotational subtrochanteric osteotomy (VDSO) and external osteosynthesis: (VDSOEO). Read More

J Child Orthop 2020 Apr;14(2):98-105

Boston Children's Hospital, Boston, Massachusetts, USA.

Purpose: Our primary research question was to investigate the severity of deformity and articular damage as well as outcomes in patients undergoing hip arthroscopy compared with open surgery for the treatment of symptomatic slipped capital femoral epiphysis (SCFE) deformity.

Methods: Retrospective review of surgical treatment of symptomatic SCFE deformity with a minimum one-year follow-up. Patients were divided into three groups: the arthroscopic group, surgical hip dislocation(SHD) group and SHD with femoral osteotomy (SHD+ITO) group. Read More

Bone Joint J 2020 May;102-B(5):580-585

The Nuffield Department of Orthopaedic, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Oxford, UK.

Aims: The aim of this study was to identify modifiable risk factors associated with mortality in patients requiring revision total hip arthroplasty (THA) for periprosthetic hip fracture.

Methods: The electronic records of consecutive patients undergoing revision THA for periprosthetic hip fracture between December 2011 and October 2018 were reviewed. The data which were collected included age, sex, body mass index (BMI), American Society of Anesthesiologists (ASA) classification, the preoperative serum level of haemoglobin, time to surgery, operating time, blood transfusion, length of hospital stay, and postoperative surgical and medical complications. Read More

Bone Joint J 2020 May;102-B(5):618-626

Department of Pediatric Orthopedics, Shengjing Hospital of China Medical University, Shenyang City, China.

Aims: The goal of closed reduction (CR) in the treatment of developmental dysplasia of the hip (DDH) is to achieve and maintain concentricity of the femoral head in the acetabulum. However, concentric reduction is not immediately attainable in all hips and it remains controversial to what degree a non-concentric reduction is acceptable. This prospective study is aimed at investigating the dynamic evolution of the hip joint space after CR in DDH using MRI. Read More

Materials (Basel) 2020 Apr 27;13(9). Epub 2020 Apr 27.

Unità Operativa Complessa di Ortopedia e Traumatologia, Ospedale Maggiore, 40100 Bologna, Italy.

Revision of large-diameter, monoblock acetabular components for both hip resurfacing arthroplasty and metal-on-metal (MoM) total hip arthroplasty (THA) is correlated to a high amount of complications. For this reason, performing a limited revision by conversion to a dual mobility (DM) without acetabular component exchange has been proposed in order to limit these complications. Although DM bearing offers an easy solution avoiding the intraoperative and time-associated complications, concern about polyethylene wear and stability remains due to the difference regarding the design, the coverage angle and the clearance of the two implants. Read More

Clin Orthop Relat Res 2020 Apr 9. Epub 2020 Apr 9.

K.-H. Widmer, Medical Faculty University of Basel, Basel, Switzerland.

Background: Lewinnek's recommendation for orienting the cup in THA is criticized because it involves a static assessment of the safe zone and because it does not consider stem geometry. A revised concept of the safe zone should consider those factors, but to our knowledge, this has not been assessed.

Questions/purposes: (1) To determine the shape, size, and location of target zones for combined cup and stem orientation for a straight stem/hemispheric cup THA to maximize the impingement-free ROM and (2) To determine whether and how these implant positions change as stem anteversion, neck-shaft angle, prosthetic head size and target range of movements are varied. Read More

Rev Bras Ortop (Sao Paulo) 2020 Apr 28;55(2):239-246. Epub 2020 Jan 28.

Grupo de Quadril do Hospital Ortopédico de Passo Fundo, Faculdade de Medicina da Universidade de Passo Fundo, Passo Fundo, RS, Brasil.

 The purpose of the present study was to evaluate the pelvic bone deformities and its correlation with the acetabular center-edge (CE) angle.  Between August 2014 and April 2015, we prospectively evaluated patients aged between 20 and 60 years old. The exclusion criteria were: metabolic disease, previous hip or spine surgery, radiograph showing hip arthrosis ≥ Tönnis two, severe hip dysplasia, global acetabular overcoverage, acetabular crossover sign, hip deformities from slipped capital femoral epiphysis (SCFE) or Leg-Perthes-Calveé, and bad quality radiographs. Read More

Appl Ergon 2020 Jul 6;86:103106. Epub 2020 Apr 6.

School of Kinesiology and Exercise Science, Faculty of Medicine, University of Montreal, Canada.

Women experience higher prevalence of work-related upper limb musculoskeletal disorders compared to men. Previous studies have investigated the biological, kinematic and electromyographic sex-related differences during a lifting task but the actual differences in musculoskeletal loads remain unknown. We investigated the sex differences in three musculoskeletal indicators: the sum of muscle activations, the sum of muscle forces and the relative time spent beyond a shear-compression dislocation ratio. Read More

Eur J Orthop Surg Traumatol 2020 Apr 27. Epub 2020 Apr 27.

Clinic for Trauma, Orthopaedic and Sports Medicine, Hospital Barmherzige Brüder, Prüfeninger Str. 86, 93049, Regensburg, Germany.

Purpose: The aim of this study was to assess patients with Parkinson's disease (PD) in comparison with patients without PD for the treatment of hip fractures. Therefore, we performed a mono-centre study including 145 patients with PD and 2135 consecutive patients without PD as a concurrent group (C).

Methods: For analysis, we used our database, in which any type of hip fracture was enrolled. Read More

J Pediatr Genet 2020 Jun 21;9(2):121-124. Epub 2019 Oct 21.

Genetics Institute, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

Mutations in the ryanodine receptor-1 ( ) may cause disorders inherited in an autosomal dominant/recessive fashion. Sequencing of in an infant of Ashkenazi Jewish descent with severe hypotonia, dislocation of hip, torticollis and scoliosis, and paternal family history of autosomal dominant mild disease. The child was compound heterozygote for a missense variant c. Read More